4T oil is a particularly formulated oil for practice in high performance 4 stroke motor cycles where high rotation and extreme high temperature that may be stumble upon. The oil can bear extremely high temperatures without tackiness or thermal breakdown. Multi-Grade Engine oil 4T 10W40 4T 20W40 4T 20W50 4T 10W30 With API Service Levels: SN /SM /SL / SJ /SC / CJ / CI / CH/ CF/ CC Motor oil necessities to execute a variety of functions beneath an extensive variety of engine operational circumstances. Thus, a number of additives are combined into the preparation: Detergent/ dispersant additives Oxidation and corrosion inhibitors & alkaline additives Antioxidants Anti-wear additives Viscidness index improver. How does engine oil work in a bike? The immense majority of contemporary motorcycles practice the similar oil to lubricate the engine, transmission, and the clutch. Motor oil lubricates moving parts by casing these portions with a smooth film. Oil's capability of confrontation to flow is called tackiness. When motor oil is cooled, the tackiness of the oil is thick and is proficient of manufacturing a friction-resistant layer on surfaces. As internal engine temperature upsurges, the tackiness thins out, letting the oil to stream better, but decreases the propensity to follow to the parts. The viscosity index measures the enactment of an oil's viscosity fluctuations as engine temperatures modifies. A higher viscosity index specifies that the rating of the oils viscosity, altering less in high-temperature conditions than a lower viscosity indexed oil. Aspects that affect oil Longer journeys at high revs. Filthy or humid circumstances. Stop-start riding in urbanized areas. This sets a lot more pressure on the oil than motorway rides. Using deprived quality fuel, this can lead to oil contagion and sludge